Alloy



unrrnn STATES PATENT orrrcn HEBMANN G. C. THOEEHRN, OF NEW YORK, N. Y., ASSIGNOR TOLIGH'J. METALS 00.,

. 0F ELIZABETH, NEW JERSEY.

Patented July 15, 1919.

ALLOY.

1,3 0, 9, Specification of Letters Patent.

No Drawing.

To all whom it may concern:

' Be it known that I, HERMANN G. C. THO- FEHRN, a citizen of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improve ments in Alloys; and I do hereby declare the following to be a, full, clear,-and exact description ofthe invention, such as will enable others skilled in the art to which it appertains to make and use the same. 7 Thisinvention relates to an improvement in alloys,the object of the invention bein to produce an alloy which shall be-excee ingly light in weight possess great tensile strength and toughness, with suflicient elasticity to render the same of great value in the manufacture of structural work in which such qualities, in a high d ee, are essential.

ith this object in view, the invention consists of an 3110 having the composition out in the claims.

My improved alloy comprises aluminum, magnesium and uranium in approximately the following proportions; to wit., aluminum from 94 to 98 per cent., magnesium from 2 to 6 per cent. and uranium from 0.01 to 0.3 per cent.

In the manufacture of the alloy, I proceed of metals hereina er set forth and pointed as follows: I first place in a suitable-crucible proportion of from 94 to 98 per cent. and.

or container a; quantity of uranium oxid suificient to provide in the finished alloy a uranium content of from 0.01 to 0.3 per cent., and apply heat to raise the temperature of the said uranium oxid to a bright red heat. I then introduce aluminum in the when. the mass has become molten, I add magnesium in'the proportion of from 2 to As these molten metals react" 6-percent. upon the uranium oxid, the latter w1ll be reduced to metal which is dissolved throughout the whole mass.

and at the same time Application filed December 15, 1917. Serial No. 207,311.

,In order to avoid the metal retaining gases which would make it porous, I agitate the molten mass with the use of an iron rodhaving a dlsk of iron on one end. With the use of this tool, I perform a pumping action 111 the molten mass, agitating the .same

gently and causing the disk or headed endv of the tool to remain under the surface of themass to avoid splashing. Such gentle agltation will cause gases which may be contained in the molten metal to escape, and

thus a good sound casting may be obtained. By means of my improved process, I 0btaln 'an alloy which is of exceedingly light weight but having great tensile strength and toughness and which is eminently suitable in the manufacture of structural work where a maximum of such qualities is an important consideration.

Having fully described my invention what I claim as new and desire to secureby Letters-Patent, is y 1. An alloy having great tensile strength and toughness and light in weight, composed of aluminum, magnesium and uranium, the major portion of the alloy composed of aluminum and the magnesium and uranium beingin relatively small proportions.

2. An alloy consisting essentially of aluminum, magnesium and uranium, the aluminum being approximately from 94 to 98 per cent., the magnesium approximately from 2 to 6 per cent., and the uranium approximately from 0.01 to 0.3 er cent.

In testimony wherec DONALD H. MoLaAN, VIVIAN L. Annmarie.

I have signed this specificationin the presence of two subscrib-' 

